Communication method and apparatus using slot based channel

Abstract

The present invention generally relates to a communication method and apparatus using a slot-based channel and, more particularly, to technology for estimating slot-based channel values in real time so as to perform Analog Network Coding (ANC) or full-duplex communication in a single slot. In order to achieve the object, a communication apparatus using a slot-based channel according to an embodiment includes a transmission unit, a channel estimation unit, and a decoding unit.

What is claimed is: 
     
         1 . A communication method using a slot-based channel, comprising:
 transmitting a first data packet that is desired to be transmitted from a first terminal station to a second terminal station in a slot;   estimating characteristic values of a channel based on the slot using part of the first data packet; and   applying the characteristic values of the slot-based channel and an interference cancellation technique based on the first data packet to a signal received by the first terminal station in the slot, and then decoding, from the received signal, a second data packet that is transmitted from the second terminal station.   
     
     
         2 . The communication method of  claim 1 , wherein estimating the characteristic values of the channel comprises:
 estimating the characteristic values of the slot-based channel using part of the first data packet that is exclusively transmitted in the slot.   
     
     
         3 . The communication method of  claim 1 , wherein transmitting the first data packet comprises:
 in order for the first terminal station to receive the part of the first data packet without interference, transmitting the first data packet earlier or later than the second data packet that is transmitted from the second terminal station.   
     
     
         4 . The communication method of  claim 3 , wherein transmitting the first data packet further comprises:
 in order for the first terminal station to receive the part of the first data packet without interference, transmitting the first data packet, with a payload size of the first data packet being reduced.   
     
     
         5 . The communication method of  claim 4 , wherein transmitting the first data packet further comprises:
 reducing the payload size of the first data packet by an amount corresponding to a sum of a preamble size and a guard time, and transmitting the first data packet, with a time synchronization error value being included in the size-reduced payload.   
     
     
         6 . The communication method of  claim 4 , wherein transmitting the first data packet further comprises:
 transmitting the first data packet earlier or later than the second data packet that is transmitted from the second terminal station, by a time corresponding to the reduced payload size of the first data packet from a slot boundary.   
     
     
         7 . The communication method of  claim 1 , wherein transmitting the first data packet comprises:
 generating the part of the first data packet using a spreading code (pseudo random noise code).   
     
     
         8 . A communication apparatus using a slot-based channel, comprising a processor configured to:
 transmit a first data packet that is desired to be transmitted from a first terminal station to a second terminal station in a slot;   estimate characteristic values of a channel based on the slot using part of the first data packet;   apply the characteristic values of the slot-based channel and an interference cancellation technique based on the first data packet to a signal received by the first terminal station in the slot; and   decode, from the received signal, a second data packet that is transmitted from the second terminal station.   
     
     
         9 . The communication apparatus of  claim 8 , wherein the processor is configured to estimate the characteristic values of the slot-based channel using part of the first data packet that is exclusively transmitted in the slot. 
     
     
         10 . The communication apparatus of  claim 8 , wherein the processor is configured to, in order for the first terminal station to receive the part of the first data packet without interference, transmit the first data packet earlier or later than the second data packet that is transmitted from the second terminal station. 
     
     
         11 . The communication apparatus of  claim 10 , wherein the processor is configured to, in order for the first terminal station to receive the part of the first data packet without interference, transmit the first data packet, with a payload size of the first data packet being reduced. 
     
     
         12 . The communication apparatus of  claim 11 , wherein the processor is configured to reduce the payload size of the first data packet by an amount corresponding to a sum of a preamble size and a guard time, and transmits the first data packet, with a time synchronization error value being included in the size-reduced payload. 
     
     
         13 . The communication apparatus of  claim 11 , wherein the processor is configured to transmit the first data packet earlier or later than the second data packet that is transmitted from the second terminal station, by a time corresponding to the reduced payload size of the first data packet from a slot boundary. 
     
     
         14 . The communication apparatus of  claim 8 , wherein the processor is configured to generate the part of the first data packet using a spreading code or pseudo random noise code.